Yucca gigantea is a species of flowering plant in the asparagus family, native to Mexico and Central America. Growing up to 8–12 m (26–39 ft) in height, it is an evergreen shrub which is widely cultivated as an ornamental garden or house plant often being called just yucca cane.
Common names include spineless yucca, soft-tip yucca, blue-stem yucca, giant yucca, yucca cane, and itabo. Its flower, the izote, is the national flower of El Salvador.
Yucca gigantea is usually less than 6 m (20 ft) in height. It may have a thick, single trunk or be multitrunked resulting from a thickened, inflated, trunk-like lower base similar to an elephant's foot. The exceptionally narrow leaves fan out in clumps. They are strap-like, spineless and up to 1.2 m (4 ft) in length. White flowers are produced in the summer. Mature plants produce erect spikes of pendent flowers up to 1 m (3.3 ft) in length. Flowers are followed by brown, fleshy fruits which are oval and up to 2.5 cm (1 in) long.
The French botanist Charles Lemaire published the name Yucca gigantea in November 1859. This is the name used by the World Checklist of Selected Plant Families as of January 2014[update], although other sources use Yucca guatemalensis, published by Baker in 1872.
The species is still most widely known in the horticultural literature as Yucca elephantipes. The first mention of that name was by the German horticulturalist Eduard von Regel in February 1859. He claimed that a different species, Y. aloifolia, was sometimes known as Y. elephantipes when grown in European gardens because of its thickened stem base. However, since he did not intend to offer Y. elephantipes as the actual correct name, this was not a valid publication. In a major article on yuccas and allies in 1902, the American botanist William Trelease also used the name Y. elephantipes, referring to Regel's 1859 publication. This came too late though, as Y. gigantea had by then already been established. Y. elephantipes must therefore be regarded as an illegitimate name, according to the strict rules of the ICN,
Yucca gigantea is found natively in Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and the eastern part of Mexico (Quintana Roo, Yucatán, Campeche, Tabasco, Chiapas, Veracruz, eastern Puebla and southern Tamaulipas).
It is also reportedly naturalized in Puerto Rico, the Leeward Islands and Ecuador.
The species can be grown in a variety of soils and is drought-tolerant. Young plants are occasionally used as houseplants. However the species grows best in a hot semi-arid climate, so plants are subject to root rot if overwatered. Older plants are generally the most susceptible. For this reason young, shorter trees are superior houseplants as they are more adaptable to environmental changes. Yucca gigantea can be affected by a number of pests including scale, yucca moth borers, and yucca weevils. Leaf spot may affect the appearance of the leaves, but it does not affect the health of the plant. Propagation is by suckers, cuttings or seed.
- World Checklist of Selected Plant Families, 291761.
- Tropicos, Yucca gigantea
- "Yucca elephantipes". RHS. Retrieved 11 March 2019.
- Lowes L20982hp
- Edward F. Gilman and Dennis G. Watson. "Yucca elephantipes" (PDF). Environmental Horticulture, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Retrieved 19 February 2014.
- Eggli, Urs (2001). Illustrated handbook of succulent plants. Springer. p. 93. ISBN 978-3-540-41692-0. Retrieved 26 February 2012.
- Lemaire, Charles (1859). L'Illustration horticole, volume 6. J. Linder. p. 91.
- "Yucca guatemalensis". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2008-02-06.
- von Regel, Eduard August (1859). "Aufzählung der Yucca-arten des Kaiserlichen Botanischen Gartens in St. Petersburg nebst Beiträgen zu deren Cultur". Gartenflora. 8: 34–38. Retrieved 2012-02-26. p. 35: "Wegen des am Grunde verdickten Stammes in den Gärten auch als Y. elephantipes gehend." (Going also in gardens as Y. elephantipes because of the thickened base of the stem).
- Trelease, William (1902). "The Yucceae". Annual Report of the Missouri Botanical Garden. 13: 27–129. p. 94
- Tropicos.org. "**Yucca elephantipes Regel". Missouri Botanical Garden. Retrieved 2012-02-26.
- "Yucca elephantipes". The Plant List. Retrieved 11 March 2018.
- Kew World Checklist of Selected Plant Families
- "Yucca weevil—Scyphophorus yuccae". Agriculture and Natural Resources, University of California. Retrieved 14 July 2016.
- Ryczkowski, Angela. "Insects & Pests of the Yucca". San Francisco Gate. Retrieved 14 July 2016.
- "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 108. Retrieved 11 March 2019.
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